onsemi

74AC139SJ  

Encoders, Decoders, Multiplexers & Demultiplexers

74AC139SJ Description

The 74AC139SJ is a high-performance decoder/demultiplexer IC designed for a wide range of digital applications. Manufactured by onsemi, this logic IC chip belongs to the 74AC series and is housed in a surface-mount package. The 74AC139SJ features two independent 1 x 2:4 decoder/demultiplexer circuits, making it highly versatile for various digital signal processing tasks. It operates on a single supply voltage ranging from 2V to 6V, providing flexibility in power supply requirements. The device is capable of delivering an output current of 24mA for both high and low states, ensuring robust signal handling capabilities. With a moisture sensitivity level (MSL) of 1 (unlimited), the 74AC139SJ is suitable for a wide range of environmental conditions, making it ideal for both industrial and consumer applications. The product is REACH unaffected and classified under HTSUS code 8542.39.0001.

74AC139SJ Features

• High-Speed Operation: The 74AC139SJ operates at high speeds, making it suitable for applications requiring fast signal processing and decoding.
• Versatile Power Supply: With a wide operating voltage range of 2V to 6V, the device can be used in various systems with different power supply configurations.
• Independent Circuits: The inclusion of two independent 1 x 2:4 decoder/demultiplexer circuits allows for simultaneous processing of multiple signals, enhancing the efficiency of digital systems.
• Surface-Mount Packaging: The surface-mount package ensures ease of integration into modern printed circuit boards (PCBs), facilitating compact and reliable designs.
• Robust Current Handling: The ability to handle 24mA for both high and low output states ensures reliable signal transmission and minimizes the risk of signal degradation.
• Moisture Resistance: The MSL rating of 1 (unlimited) makes the 74AC139SJ suitable for use in environments with varying humidity levels, enhancing its reliability and durability.
• Compliance and Safety: The device is REACH unaffected, ensuring compliance with environmental and safety regulations.

74AC139SJ Applications

The 74AC139SJ is ideal for a variety of applications due to its high-speed operation, versatile power supply, and robust current handling capabilities. Some specific use cases include:

• Digital Signal Processing: The device can be used in systems requiring efficient decoding and demultiplexing of digital signals, such as in telecommunications and data transmission systems.
• Microcontroller Interfaces: The 74AC139SJ can be integrated into microcontroller-based systems to manage multiple input/output signals, enhancing the functionality and efficiency of embedded systems.
• Industrial Control Systems: The wide operating voltage range and moisture resistance make it suitable for industrial applications where reliability and durability are critical.
• Consumer Electronics: The compact surface-mount package and high-speed operation make it ideal for consumer electronics, such as smartphones, tablets, and other portable devices.

Conclusion of 74AC139SJ

The 74AC139SJ is a versatile and reliable decoder/demultiplexer IC designed for high-speed digital applications. Its unique features, such as the wide operating voltage range, robust current handling, and moisture resistance, make it a valuable component in various electronic systems. Despite its obsolete status, the 74AC139SJ remains a preferred choice for engineers and designers looking for a reliable and efficient solution for their digital signal processing needs. Its compliance with environmental and safety regulations further enhances its suitability for modern electronics applications.

74AC139SJ Documents

Download datasheets and manufacturer documentation for 74AC139SJ